16 Commits

Author	SHA1	Message	Date
surtur	8cafbc7706	fix: -Wextra-semi	2022-02-03 00:49:40 +01:00
surtur	e452a63b4a	pool: add call_once to initialize_pool() mem. fun ... * also protect set_id() member function with a std::lock_guard, which holds mtx for the time of initialization	2022-01-22 21:17:36 +01:00
surtur	d404681889	feat: "prepare to add proper entropy source" nits ... general * make greater use of "this" Fortuna * declare da_pools as a proper std::array of 32 Pool objects * declare da_pools as const * use std::shared_ptr _p_pools to access da_pools and share access to it * reflect change of pools[] -> std::array in how the array elements are accessed, which is a) via _p_pools pointer and b) using ".at(i)" function * pass _p_pools shared_ptr to Accumulator * refactor member function names and variable names * add member function attribute [[optimize_for_synchronized]] * secure conversions with static_cast-s Accumulator * make use of _p_pools * add _p_pools-related member functions * add a static constexpr variable NUM_OF_POOLS UrandomEntropySrc * implement event adding logic using _p_pools * make std::vector<char> non-static in urandom_entropy_src * implement proper urandom entropy source event "sourcing" (from /dev/urandom), event adding, clear bytes array at the end * properly convert using reinterpret_cast * protect access to the main function with std::lock_guard * receive EventAdderImpl as a ref * use return value from "add_entropy()" member function and create sanity guard checking the return code "int ret" EventAdder * pass event (std::vector<char>) by const& EventAdderImpl * make use of _p_pools shared_ptr * implement proper pool-rotating event-adding logic Pool * delete all copy constructors and assignment operator, the objects will not be copied or assigned to * receive parameters by const& where possible/sensible * handle concurrency: * declare std:string s as mutable * declare a rw std::mutex intended for writing and mutable std::recursive_mutex for read-only operations in const member functions ref: https://herbsutter.com/2013/05/24/gotw-6a-const-correctness-part-1-3/ ref: https://arne-mertz.de/2017/10/mutable/ * use std::lock_guard and std::unique_lock * refactor "add_entropy()" member function * get rid of intermediate "event_str" and directly use the "event" std::vector<char> for all operations * add a lock guard to prevent multiple threads (should that route be taken) from modifying pool resources simultaneously * add all_ok bool for basic sanity checking * add print statements (at least for now) * rename "get_s_length()" member function to "get_s_byte_count()" and repurpose it to return byte count of the stored entropy std::string s	2022-01-17 08:27:24 +01:00
surtur	e899c03da2	chore(pool): add const& qual, #include stuff	2022-01-17 07:49:03 +01:00
surtur	ebcc4f87d5	pool: move logic to the source file	2022-01-10 05:07:18 +01:00
surtur	4b216a6f6e	refactor: clang-format	2022-01-10 04:25:03 +01:00
surtur	67c2462c3a	fix: -Wtype-limits x2	2022-01-09 12:31:16 +01:00
surtur	69cc71c749	pool: no copy constructor	2022-01-03 02:49:23 +01:00
surtur	6d3059f39a	pool: make ctor,dtor noexcept	2022-01-02 08:05:37 +01:00
surtur	04bbf16731	pool: set_s -> append_s as it fits better	2021-12-13 05:24:59 +01:00
surtur	af1b4cf5ad	pool: make get_id const as it just reads	2021-12-13 05:24:17 +01:00
surtur	7eaaef2fdb	fortuna: handle reseeds+clear pools for seed ... * actually clear out entropy of the pools before a reseed * correctly prepare the seed for the reseed * add a couple of helper methods to Pool that assist with getting length, retrieving and clearing of the collected entropy * catch exceptions in main(), handle them gracefully	2021-12-13 05:11:17 +01:00
surtur	65c476dbd6	add Util class + perform general refactor ... * rm duplicate do_sha() code, consolidate in Util * make reseed() public so that it can be called from outside * rm reseed() from do_crypto() where it has no place	2021-12-13 05:10:07 +01:00
surtur	2d20242b3e	accumulator(pool): (partly) implement add_entropy	2021-12-11 02:53:47 +01:00
surtur	33f6620662	chore(pool): stop spamming at initialization	2021-12-08 03:40:08 +01:00
surtur	a1cbbb209e	handle PRNG state in R_state + accumulator basis ... * handle the PRNG state with R_state nested class * add a private property R holding PRNG state to Fortuna * add R_state properties as defined in Cryptography Engineering: * a generator instance * a reseed counter * 32 pools that the collected entropy is to be distributed over * add initial definition of the Pool object and its initialization * attempt to initialize PRNG in Fortuna constructor. wrap the initialization call in a try-catch block like a cultured person * erase the string used to print data from random_data() after it's been used	2021-12-04 00:40:39 +01:00